Boat launching gear



Jan. 24, 1933. C, SMH-H 19895,@11

BOAT LAUNCHING GEAR Filed oct. 22. 195C ommimm 4 E w Mms-g QM-*N Patented Jan. 24, 1933 UNITED STATES CHRISTEN SMITH, OFNQSIQO';v NORWAY BDAT LAUNCIING- GEARv j Application filed October 22, 1830. Seria! No. 490,389.

This invention relates to boat launching gear and more particularly to the launching gear on ships for'launching the ships lifef, boats and in which the boats are supported d by davits.

According to the invent-ion the davits of each boat are so interconnected as to be movable simultaneously. The davits may be so arranged as to be capable of rotation in a vertical plane and for that purpose may be mounted on a shaft carried in bearings on the deck of the ship, means being provided to rotate the shaft to an extent necessary to bring the boats from the inboard to the outboard positions or vice versa. Stops may be provided to limit the extent of movement of the davits. In a case where a number of boats are arranged on one side of a deck of a ship the davits of all the boats may be interconnected so as Eto be movable simultaneously. In that case also the davits vmay be mounted on a shaft having means for rotating it. w In order that the said invention may be J clearly understood and readily carried into effect the same will now be described more fully with reference to the accompanying drawing, in which Figure l is an elevation of two ships boats 3 provided with davits in accordance with the invention and in their inboard position.

Figure 2 is a view similar to Figure 1, but showing the boat-s in the outboard position.

H Figure 3 is an end view of Figure l. J Figure 4 is an end view of Figure 2.

A are the boats, B the davits. The davits are carried at their lower ends on a shaft C which is arranged parallel and close to the edge of the deck and is supported in bearings D. The davits are provided with overhanging portions B1 from which the boats are suspended. A separate davit is not provided for each end of each boat, but the u davits between adjacent boats have two over- D hanging arms B1 extending in opposite directions from which the ends of adjacent boats are suspended. The shaft C carries projecting arms E distributed along its length and connected by bars E1 lying parallel to the '3 shaft, the arms and bars forming a protective railing' to' prevent people from falling overboard when'wthe boats are in the outboard position". Fenders F are' carried'f on the shaft C onprojectingl arms F1, twosuch fenders being provided for each boat. The arms F1 may, if desired, be arranged to act as the aforesaid stops but in the arrangement shown the stops are formed by projecting members C1 on the shaft C which co-operate with an upstanding member C2 on the deck S" and a'ct as stops. Flexible members G passing around the boat are arranged t-o give it stability when it is in the outboard position. They extend between the end of the davi't arms and apoint on the deck,-or as slrownf, between the davit arms and part of the aforesaid rail and may be allowed to-become slack inv the inboard position of the boat.v Power' drivenl meansV are arranged at one4 end of the shaft for rotating it.v The means comprises a toothed quadrant I-I arranged oir the end of the vshaft C and engaging with` a pinion I on a second shaft J which: secondshaft carries a Worm wheel K witlr which engages worm L driven by a prime mover M which is shown as an electric motor.

When the boats are in thev inboard posi` tion as shown in Figures l and, thev aforesaid members G are slack, the fenders F are resting against the outer surface of the boat and the appropriate projecting member C1 isirr contact with the upstandingmember G2. In' order to bring the: boats into the outboard position, shown in Figures 2 and 4, the motor M is startedy to rotate the shaft C in the appropriate direction. The extent of rotation of the shaft is limited by the comi-ng into vcontact of the other projecting mem ber C1 with" the upstanding member C2. In the outboard position the flexible member G passing around the boats have become taut and act to give them stability, Aand the fenders F are interposed between the boats and the outer wall of the ship against which wall they may rest in that position. In order to return the boats to the inboard position the shaft is rotated in the reverse direction by the electric motor M.

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Y What I claim and desire to secure by Letters Patent of the United States is 1. Ships boat launching gear comprising davits, a shaft connecting same, boat-fenders, means for rotating said shaft to move said davits and fenders into position and arms projecting from said shaft for. carrying said boat-fenders. j f p n l 2. Ships boat launching lgear comprising davits, a shaft connecting said davits, meansA for rotating said shaft to move saiddavits; and a protective rail moved into position by said shaft When it is rotated"V to moved-saidl davits to the outboard position. A Y Y 3. Ships boat launching gear as in claim l 2, in` which the protective rail .iscarried onv arms projecting from said shaft. Y4,. Shipsboat launching gear comprising t davits for morethan one boat, a shafthaving y said davits mounted on it in spaced relation shipoppositely extending boat supporting f armson the intermediate davits, means for krotating said shaft, boat fenders ycarried on arms projecting from said shaft, a protective railcarried on other,V arms *projectingY from said shaft, said protective rail and boat fenders being moved into position by said Y shaftwhen it is rotated toV move said davits to theoutboard position. Y* j 5. Ships vboat launchingvgearcomprising a shaft, bearings for said shaft for mounting adjacent the edge of the deck of the ship, aA number of davit arms carried by said shaft and for supporting a number of boats, means for partially rotating saidy shaft so as to swing all of said boats from an inboard .posi-y tion'into an outboard position simultaneously and 4vice versa, said rotational means being l situated at one end of saidfshaft and fenders 40 on saidk shaft rotatable ytherewithso as to v engage the sides ofthe boats 'when the boats are in an inboard position and also when the boats arein kan outboardy position.

Y 6. Ships boat launching gear comprising a shaft,`bearings for said shaft formounting Y adjacent the edge fof the deckv of the ship, a

number of davit arms carried byvsaid' shaft Y Y and for supporting ya number of boats,Y means n Y for partially rotating said 'shaft so as toswing 5 all .offsaid boats fromV an inboard position 1 into an outboard position simultaneously and vice versa, said rotational means being situatedy at one endof saidshaft, and a railing carried byvsaid shaftand rotatable therewith, said railingk being moved into its operativeA positionfonfthe shaft beingcrotated to swing theboats into an outboard position. j

kIn testimony whereof I have signed Imy name unto this specification. j

` l *l CHRISTEN SMITH. v 

